Binding machine for objects such as bundles of laminated metallurgical products



United States Patent Inventor Hubert Elineau Mont-Saint-Aignan, FranceAppl. No. 596,680 Filed Nov. 23, 1966 Patented Sept. 8, 1970 Assignee R.Senard et Fils Maromme, Seine-Maritime, France Priority Nov. 23, 1965France 7,119

BINDING MACHINE FOR OBJECTS SUCH AS BUNDLES OF LAMINATED METALLURGICALPRODUCTS 9 Claims, 15 Drawing Figs.

U.S. Cl 100/27, 100/31 Int. Cl. ..B65b 13/28 [50] Field ofSearch 100/25,26, 27, 28. 31, 4

[56] References Cited UNITED STATES PATENTS 2,655,097 10/1953 Fons eta1. 100/27X 2,674,181 4/1954 Jones 100/26X 2,742,851 4/1956 Fryer....i00/26X 2,880,666 4/1959 Rogers 100/26 3,092,016 6/1963 Nebout et a1.100/31X Primary Examiner-Billy J. Wilhite Attorney-Sparrow and SparrowABSTRACT: A machine for binding and tieing of a stack of steel rods andsimilar metallurgical bar-shaped products. A crankshaft with staggeredparallel cranks and push rods for rotating of a binding wire guide aboutthe stack of the products, wire cutting and wire ends twistingmechanisms combined with the binding device.

Patentd Sept. 8, 1970 3,527,156

flasapr 12/4 5 d nk/P010 59.4 lam ATTORNEY Patented Sept. 8, 19763,527,156

Sheet 2 of 4 JPA/P/POI/AI/D Jammy ATTORNEYfi Patented Sept. 8, 1976 13,527,156

' BY IPA/9901.0 Jew/Pa ATTORNEY5 BINDING MMCHINE FOR OBJECTS SUCH ASBUNDLES F LAMihiATED METALLURGICAL PRODUCTS The present inventionrelates to a machine designed for encircling with one or more bondscertain objects, and relates more particularly, but not exclusively, toa machine of this type, that is capable of binding bundles ofmetallurgical elongated products such as steel bars for concrete, steelsections, etc. stacked or loose.

A number of machines of this type are known, which often offer thedrawback of being only adequately suitable for binding satisfactorilycertain products; furthermore, the period of every cycle of work ofthese machines is usually inconsistent with the requirements to modernmass production, owing of the comparative slowness of this cycle;eventually, the available machines are often very complicated and veryexpensive.

The object of the present invention is to remedy these various drawbacksby providing a machine of this kind, which meets in a better way than ithas been done up to now, the requirements of technique.

The invention consists mainly in a machine that includes componentswhich perform the encircling of the object to be bound by the bond bymeans of a guide that revolves around this object, the rotation of theguide being attained by a crankshaft integral with an arm carrying theaforesaid guide, and being driven by two devices with parallel cranksand pushrods, one of these devices being angularly staggered in relationto the other.

The invention also consists in certain other hereinafter mentionedarrangements preferably used together with the aforesaid mainarrangement.

The invention relates more especially to certain applications andrealizations of these arrangements; it relates more particularly, as anew industrial product, to the binding machines ofthe type in question,to the units comprising these machines, together with the elements andsuitable tools.

by way of example and in order that the invention could be more easilyunderstood, a description is given hereinafter of the particularembodiment of the invention, illustrated schematically by way of examplein the attached drawing, in which:

F108. 1 and 2 show in a partial side elevation and in plan,respectively, the device for application of the bond in a bindingmachine according to the invention;

i lG. 3 shows in elevation a holding gripper for the object to be boundin this machine;

lFl G. 4 is a view, in partial elevation and cross-section of a mobilegripper of this machine, the said gripper transferring the end of thebond that is used, from a waiting posi tion to the binding position;

P16. 5 shows in elevation the device for advancing under tension, thebond used in the machine;

lFl'GS. ti and 7 show, in elevation, in front and side viewrespectively, a shearing gripper designed to cut the bond and to holdthe cut bond before setting the twist jointing head in motion;

F16. H is a view in elevation of the device that twists together theends ofthe bond laid on by the machine;

P10. 9 is a view in elevation of an arrangement of the machine, designedto fold back the ends of the bond that have been twistjointed;

1 103. lb, 11, 12 and 13 show the various stages ofthe binding operationcarried out by the machine;

F113. 14 is a view in partial cross'section of a detail of thetwistjointing device shown in FIG. 8; and

FIG. 15 shows a diagram of the combination of the various mechanismswhich constitute the machine. If it is intended to build a bindingmachine according to the invention, and, more especially, according tothe embodiment as shown and described, together with the realization ofits various parts, to which preference should be given, one shouldproceed as follows or in a similar manner.

The binding machine consists of a frame 1 in which the axles ofidentical cranks 2, 3 and 4, 5 can rotate. On these aides, identicalgears 15 and 7 are keyed, and they engage a common gear 8. Gear 8engages a toothed segment 9 that rotates around axle 10 and is driven bya double-acting jack 1 1 through crank 12. Jack 11 is hinged in 13 roundan axle that is fixed in relation to frame 1. By actuating jack 11, onecauses the rotation, in one or the other direction, of cranks 2, 3 and4, 5.

Cranks 2 and 4 are parallel to one another and are posi tioned on a sideof the frame 1; cranks 3 and 5 are parallel to one another and arepositioned on the other side of the said frame, but there is a certainangular stagger, of the order of 70, between cranks 2 and 3 this valuebeing not restrictive; the same stagger exists of course between cranks4 and 5.

The wrist-pins of cranks 2 and 4 on one part, and of 3 and 5, on theother, rotate in bearings supported respectively by push-rods l4 and 15which move about whilst remaining parallel to the plane of the axis ofrotation of the cranks. Beyond the wrist-pin of crank 4, push-rod 14extends with a straight part 16 that ends at crosshead 17; beyond thewristpin of crank 5, push-rod 15 carries an extension with a doublecurvature 18 that ends at crosshead 19. In crossheads 17 and 19,crankshaft can rotate. The axles of crossheads 17 and 19 arerespectively in the planes of the axles of wrist-pins of cranks 2, 4 and3,5.

When cranks 2, 4, 3 and 5 rotate under the action of jack 11, push-rods14 and 15 move about, remaining parallel to themselves, and the centersof crossheads 17 and 19 describe equal arcs on circles, the radius ofwhich is equal to the radius of the cranks, the centers of these circlesbeing located at 21. In this motion, all points ofcrank-shaft 20 rotatealso around a center line which is located at 21; it is in particularthe case for arm 22 rigidly connected to crankshaft 20, and for pulleys23, 24, 25 and eccentric pulley 26, which all are carried by this arm22.

The object to be bound, consisting in the example by a stack ofangle-bars 27, is placed in the proximity of center 21 around which theaforementioned pulleys can rotate. This object 27 is held by an arm 28operated by a double acting jack 29 swivelling on frame 30 (see FIG. 3).

The bond, formed by wire 31 unwound from a reel, passes through astretching device supported by frame 32. This device comprises rollers33, straightening the wire and restraining its motion, and a windingdrum with a mobile arm pulled back by a spring 35 and swivelling aboutcenter 36. The swivelling motion of arm 34 is limited by abutments 37and 38.

Prior to the binding operation, the end A ofwire 31, held on pulley 25by eccentric pulley 26, is transferred to B by a mobile gripper 39supported by frame 40, through two parallel cranks 41, 42. These cranksare driven by a double-acting jack 43 through gears 44 and toothedsector 45. The closing and opening of gripper 39 are driven bydouble-acting jack 46.

When the end of wire 31 has been transferred to point B, jack 11 isactuated and the object 27 is encircled by wire 31 as shown on FIGS. 10,ll, 12 and 13. During this operation, the end ofthe wire is held bygripper 39 at position B.

After the encircling of the object 27 by the bond, a doubleacting jack47, hinged on frame 48, operates a shearing gripper with an arm 49hinged in 50 on this frame. The wire of the bond is gripped by jaws 51,and cut by shear 52. These jaws and shear are actuated by jack 47,springs 53 and 54 ensuring respectively the connection of shear 52 whichis attached to jack 47 and hinged in 55 on arm 49, with the aforesaidarm 49 and with jaws 51 also hinged in 55.

The ends of the Wire of the binding are held by gripper 39 and jaws 51respectively. Wire 31 is cut by shear 52, jack 11 returns the mechanismwhich carries pulleys 25, 26 to its initial position and the cut end ofwire 31 return back to A. A double-acting jack 56, hinged on frame 57,thereupon actuates a twisting device carried by a support 58 hinged onframe 57. This device comprises a double-acting jack 59 that causes,through a toothed sector 60 and a gear 61, a twist jointing head 62 torotate, which grabs the ends of the binding wire, as shown schematicallyin 62a (FIG. 13). Gripper 39 and jaws 51 are then opened. The rotationof gear 61 first effects the tightening of gripper 63 in the twistjointing head; to this effect, gear 61 actuates an eccentric 64 whichacts on gripper 63; then a pin 65, supported by gear 61, comes intocontact with a boss 66 of tubular part 67 of the head; the twistjointing of the ends of the binding wire has thus been performed. Whenthe ends of the wire have been twisted, a reverse movement ofjack 59loosens gripper 63 and releases the twist jointing head 62 which returnsto its original position, whereby jack 56 pulls this head back.

After the release of the twist jointing head, the twisted bound wiresare folded back by a device which comprises a lever 68 hinged in 69 on aframe 70 and actuated by ajack 71 as shown in FIG. 9.

After the withdrawal of the aforementioned folding back device, the arm28 which holds the object 27 is opened to allow removing of the boundobject, and gripper 39 returns in the open condition, to its startingposition A, ready for another binding cycle.

The motions of the various jacks can be performed through a programmer;the motion of one jack can also result from a previous operation ofanotherjack.

It results from the foregoing description that by applying the describedprocesses one obtains machines which are suited for binding objects andoffer many advantages, including: a reduced size, a high safety ofoperation and an easy adaptation to all cases of objects to be bound.

lclaim:

1. A binding machine for encircling with one or more bonds certainobjects, particularly bundles of elongated metal products, said machinecomprising means for performing said encircling of said object to bebound by said bond, said means comprising a guide adapted to rotatearound said object, a

arm holding said object to be bound.

3. A binding machine according to claim 1, and a stretching device forsaid bond, said stretching device having rollers, said device comprisinga winding drum having a movable arm and a spring for the return movementof said arm.

4. A binding machine according to claim 1, and said means for holdingsaid ends comprising a movable gripper, and two parallel cranks forsupporting said gripper, said gripper arranged for holding the end ofsaid bond during binding.

5. A binding machine according to claim 1, and a movable shearinggripper for cutting said bond off and for holding the cut end thereof.

6. A binding machine according to claim 1, and further comprising amovable twist-jointing device for twisting of the ends of the bond ofthe binding.

7. A binding machine according to claim 6, said twist-jointing devicecomprising a twist-jointing head having a gripper and further comprisingan eccentric for actuating said gripper during the rotation of saidaforesaid head.

8. A binding machine according to claim 6, and further comprising alever device for folding back said twist-jointed wires of the bond.

9. A binding machine according to claim 8, and comprising a pluralityofdouble-acting jacks for operating said devices.

